Well, if you want an idea of level, during it's time it was pitched against Ikki Tousen
Out of the two personally I found Tenge to have a better plot development (you're going to have a fairly big chunk of background plot thrown at you later), but don't get me wrong it's no Godfather when it comes to intellectual plot.
Try to enjoy it as a shounen action story and don't sweat the plot too much. The opening credits sum the series up for me; fun and kinda cool with some pretty sweet moves sometimes
